100- 



80- 



60- 



40- 



20- 



P Estuarine water 

 O Distilled water 



17 Nov 1971 



8 12 



Germination period (days) 



Figure 21. Comparison of germination of S. alterniflova stored 

 in estuarine water and distilled water. 



Several methods of incorporating seed were used to replace raking for 

 larger scale plantings. Where access is available, a farm tractor may be 

 used. We have used a standard farm tractor equipped with dual wheels for 

 added flotation and traction. Seed were broadcast by hand on the surface 

 and covered by six narrow sweeps mounted on the tool bar of the tractor, 

 followed by a spiked-tooth harrow (Fig. 22). Seed were also incorporated 

 without the spiked-tooth harrow by going over the area with the sweeps, 

 broadcasting the seed (Fig. 23) and plowing again with the sweeps. 



Mechanization of distribution of the wet seed would be difficult. 

 However, spreading by hand works very well. Seeds placed in tubs or 

 buckets should be drained of excess water and sufficient dry sand mixed 

 with them to cause the individual seeds to separate (Fig. 24). They are 

 then ready to be broadcast. 



Many areas are not accessible to a full-sized tractor. Two portable 

 mechanical methods have been utilized in these areas. For small areas, 

 seed may be broadcast (Fig. 25) and incorporated with a rototiller (Fig. 26) 



55 



